Digital Dry Block Heater 4 Features: This Digital block heater can hold four aluminum blocks. It provides accurate temperature control in small vessels. It has PT-1000 temperature sensor which allows temperature control directly in the sample vessel. It is used along with PCR tubes, PCR strips, Greiner tubes, microplates and cuvettes. The block heater multipurpose unit is perfect for melting and boiling point determination, enzyme reactions, incubation and activation of cultures, immunoassays, DNA denaturation, culture media tests, coagulation tests, blood-urea-nitrogen determinations and in situ hybridizations, for incubation and activation of cultures, and a wide variety of other laboratory procedures. Stepless adjustable temperature up to 120 °C Timer: Countdown, can be adjusted from 1 min to 99h 59min Counter: Display of heating time Multipurpose with a large number of blocks Error code display Fixed safety circuit Acoustic signal at end of test